若两台主机在同一子网中，则两台主机的IP地址分别与它们的子网掩码相“与”的结果一定（）。
A、为全0
B、为全1
C、相同
D、不同
You have been tasked with creating Business Events for an E-Business Suite workflow project. Whatwould you use to create your Business Events?（）
A、Oracle Workflow Builder
B、Oracle Workflow Definition Loader
C、Oracle Business Event Definition Loader
D、Workflow Administrator Web page in E-Business Suite
有三个关系R、S和T如下：则由关系R和S得到关系T的操作是（ ）。
A、并
B、投影
C、交
D、选择
患者，男性，52岁。行硬膜外腔阻滞腹腔镜胆囊切除术，术后患者出现剧烈背痛，进行性脊髓压迫症状，伴肌无力、尿潴留、括约肌功能障碍，继而出现完全性截瘫。首先考虑患者发生了（）
A、硬膜外血肿
B、麻醉药中毒反应
C、全脊髓麻醉
D、假性脑膜炎
E、麻醉平面过高
When defining a function activity, what is true about the Result Type?（） (Choose two.)
AResult Type is optional.
BResult Type is mandatory.
CResult Type can be changed after it is assigned to the function activity.
DResult Type should belong to the same item type as the function activity
If an external monitor is attached to a laptop and it does not work， which of the following actions should a technician take FIRST？（）
A、Re-install the operating system.
B、Open and close the cover.
C、Use the function key to activate the monitor.
D、Install new software for the keyboard.